26609113129 has 9 divisors (see below), whose sum is σ = 26805476727. Its totient is φ = 26414181144.

The previous prime is 26609113123. The next prime is 26609113147. The reversal of 26609113129 is 92131190662.

The square root of 26609113129 is 163123.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7799539225 + 18809573904 = 88315^2 + 137148^2 .

It is not a de Polignac number, because 26609113129 - 2⁷ = 26609113001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26609113091 and 26609113100.

It is not an unprimeable number, because it can be changed into a prime (26609113123) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25609792 + ... + 25610830.

It is an arithmetic number, because the mean of its divisors is an integer number (2978386303).

Almost surely, 2^26609113129 is an apocalyptic number.

26609113129 is the 163123-rd square number.

26609113129 is the 81562-nd centered octagonal number.

It is an amenable number.

26609113129 is a deficient number, since it is larger than the sum of its proper divisors (196363598).

26609113129 is an frugal number, since it uses more digits than its factorization.

26609113129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 26609113129 in words is "twenty-six billion, six hundred nine million, one hundred thirteen thousand, one hundred twenty-nine".